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Method for degrading atrazine in water by activating potassium peroxymonosulfate through iron-aluminum mud

A technology of potassium hydrogen persulfate and atrazine, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as resource consumption and adverse effects, and achieve The effect of wide distribution, low cost and large output

Inactive Publication Date: 2017-11-17
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it should be noted that the preparation process and method of iron-containing catalysts require a large number of experimental verifications, which will consume a lot of resources and may have adverse effects on the environment.

Method used

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  • Method for degrading atrazine in water by activating potassium peroxymonosulfate through iron-aluminum mud
  • Method for degrading atrazine in water by activating potassium peroxymonosulfate through iron-aluminum mud
  • Method for degrading atrazine in water by activating potassium peroxymonosulfate through iron-aluminum mud

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Step 1: Use iron-aluminum mud from a water supply plant in Beijing as raw material, air-dried, crushed, and ground through a 100-mesh sieve for use. The obtained iron-aluminum slime was analyzed, and the results of pH, organic matter and main element composition are shown in Table 1.

[0034] Step 2: Add 200ml of 10μM atrazine solution into a 250ml Erlenmeyer flask. Accurately take 0.1g iron-aluminum slime sample in the conical flask of 250ml, add the potassium hydrogen persulfate solution 5ml of certain concentration simultaneously in conical flask, make the mol ratio of persulfate and atrazine be 20: 1.

[0035] Step 3: Place the Erlenmeyer flask on a magnetic stirrer and perform magnetic stirring at a speed of 200 r / min. Samples were taken at 0.5h, 1h, 2h, 3h, 4h, 5h, and 6h respectively, and after the samples were filtered through a 0.22 μm membrane filter, the concentration of atrazine was determined by liquid chromatography. According to the difference between ...

Embodiment 2

[0039] Except that the mol ratio of persulfate and atrazine is 50:1 in the second step, other implementation steps are all the same as in Example 1. For experimental results, see figure 1 .

Embodiment 3

[0041] Except that the mol ratio of persulfate and atrazine is 100:1 in the second step, other implementation steps are all the same as in Example 1. For experimental results, see figure 1 .

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Abstract

The invention provides a method for degrading atrazine in water by activating potassium peroxymonosulfate through iron-aluminum mud. The method comprises the steps of adding naturally-aired, crushed, ground, sieved and uniformly mixed iron-aluminum mud into an atrazine solution in a certain solid-liquid ratio, and adding a certain concentration of potassium peroxymonosulfate, so as to remove atrazine. The method for degrading atrazine in water by activating potassium peroxymonosulfate through the iron-aluminum mud has the beneficial effects that the operation is simple, the degradation effect is good, the degradation efficiency can reach 95% or above, and meanwhile, the treatment problem of the iron-aluminum mud can be solved.

Description

technical field [0001] The invention belongs to the field of harmless treatment of pollutants, and in particular relates to the degradation of atrazine in water by iron-aluminum mud. Background technique [0002] Atrazine is a triazine herbicide mainly used for the removal of annual grass and broadleaf weeds. It is used in a large amount and its properties are relatively stable, and it is easy to remain in the soil. Atrazine remaining in the soil will enter the surface water body with rainwater or irrigation water, and it is easy to cause harm to human body and other organisms through bioaccumulation. Studies have shown that atrazine remaining in water can seriously affect the growth and reproduction of species, and even increase the chance of human beings suffering from cancer. Traditional treatment methods mainly include adsorption, ozone-activated carbon, and biological methods, but these technologies have shortcomings such as incomplete degradation of pollutants, diffi...

Claims

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Application Information

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IPC IPC(8): C02F1/72
CPCC02F1/725C02F2101/38
Inventor 刘希涛章慧娟
Owner BEIJING NORMAL UNIVERSITY
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